It was interesting to hear a Lecturer in Nutrition at Harvard Medical School (Dr. W. Willett) discussing this issue on a metro-NYC radio station today. There are several published studies, including one out of Japan and one out of Indonesia, showing a correlation between tofu intake and dementia. Regrettably, the studies showed that higher intake of tofu was correlated with a higher risk of dementia. (Don't ask for references, as it was on the radio and specific citations were not made; for all I know they aren't yet available in English). Correlational studies are certainly not proof, but when several point in the same direction, they are reason for further investigation. What struck me about all of this is that certain foods like tofu have come to have iconic status lately, touted as the sort of thing you can barely eat enough of. Yet, as Willett noted, for tofu and other items sometimes referred to as superfoods (blueberries, broccoli, pomegranate......others), there is an absolute dearth of adequate data in humans about potential benefit or harm from diets rich in these items. The take-home lesson may be to eat a very varied diet with no one special emphasis. On his 102nd birthday, jazz great Eubie Blake was reminded that his own habits (smoked alot, drank alot, diet based on hedonism) were remarkable given his longevity. He replied "If I had known I was going to live so long, I would have taken better care of myself."